rnd-20091210-1-src
[rocksndiamonds.git] / src / files.c
index 3b51e6e28b92236f2126c769e29d3f78f924735a..80037699fc8ae90aacadcca7c13d8fc04d1cb747 100644 (file)
@@ -182,6 +182,12 @@ static struct LevelFileConfigInfo chunk_config_INFO[] =
     &li.gems_needed,                   0
   },
 
+  {
+    -1,                                        -1,
+    TYPE_INTEGER,                      CONF_VALUE_32_BIT(2),
+    &li.random_seed,                   0
+  },
+
   {
     -1,                                        -1,
     TYPE_BOOLEAN,                      CONF_VALUE_8_BIT(2),
@@ -218,6 +224,12 @@ static struct LevelFileConfigInfo chunk_config_INFO[] =
     &li.dont_collide_with_bits,                ~0      /* default: always deadly */
   },
 
+  {
+    -1,                                        -1,
+    TYPE_BOOLEAN,                      CONF_VALUE_8_BIT(8),
+    &li.em_explodes_by_fire,           FALSE
+  },
+
   {
     -1,                                        -1,
     TYPE_INTEGER,                      CONF_VALUE_16_BIT(5),
@@ -311,6 +323,22 @@ static struct LevelFileConfigInfo chunk_config_ELEM[] =
     TYPE_ELEMENT,                      CONF_VALUE_16_BIT(3),
     &li.explosion_element[0],          EL_PLAYER_1
   },
+  {
+    EL_PLAYER_1,                       -1,
+    TYPE_BOOLEAN,                      CONF_VALUE_8_BIT(13),
+    &li.use_initial_inventory[0],      FALSE
+  },
+  {
+    EL_PLAYER_1,                       -1,
+    TYPE_BOOLEAN,                      CONF_VALUE_8_BIT(14),
+    &li.initial_inventory_size[0],     1
+  },
+  {
+    EL_PLAYER_1,                       -1,
+    TYPE_ELEMENT_LIST,                 CONF_VALUE_BYTES(1),
+    &li.initial_inventory_content[0][0],EL_EMPTY, NULL,
+    &li.initial_inventory_size[0],     1, MAX_INITIAL_INVENTORY_SIZE
+  },
 
   {
     EL_PLAYER_2,                       -1,
@@ -352,6 +380,22 @@ static struct LevelFileConfigInfo chunk_config_ELEM[] =
     TYPE_ELEMENT,                      CONF_VALUE_16_BIT(3),
     &li.explosion_element[1],          EL_PLAYER_2
   },
+  {
+    EL_PLAYER_2,                       -1,
+    TYPE_BOOLEAN,                      CONF_VALUE_8_BIT(13),
+    &li.use_initial_inventory[1],      FALSE
+  },
+  {
+    EL_PLAYER_2,                       -1,
+    TYPE_BOOLEAN,                      CONF_VALUE_8_BIT(14),
+    &li.initial_inventory_size[1],     1
+  },
+  {
+    EL_PLAYER_2,                       -1,
+    TYPE_ELEMENT_LIST,                 CONF_VALUE_BYTES(1),
+    &li.initial_inventory_content[1][0],EL_EMPTY, NULL,
+    &li.initial_inventory_size[1],     1, MAX_INITIAL_INVENTORY_SIZE
+  },
 
   {
     EL_PLAYER_3,                       -1,
@@ -393,6 +437,22 @@ static struct LevelFileConfigInfo chunk_config_ELEM[] =
     TYPE_ELEMENT,                      CONF_VALUE_16_BIT(3),
     &li.explosion_element[2],          EL_PLAYER_3
   },
+  {
+    EL_PLAYER_3,                       -1,
+    TYPE_BOOLEAN,                      CONF_VALUE_8_BIT(13),
+    &li.use_initial_inventory[2],      FALSE
+  },
+  {
+    EL_PLAYER_3,                       -1,
+    TYPE_BOOLEAN,                      CONF_VALUE_8_BIT(14),
+    &li.initial_inventory_size[2],     1
+  },
+  {
+    EL_PLAYER_3,                       -1,
+    TYPE_ELEMENT_LIST,                 CONF_VALUE_BYTES(1),
+    &li.initial_inventory_content[2][0],EL_EMPTY, NULL,
+    &li.initial_inventory_size[2],     1, MAX_INITIAL_INVENTORY_SIZE
+  },
 
   {
     EL_PLAYER_4,                       -1,
@@ -434,6 +494,22 @@ static struct LevelFileConfigInfo chunk_config_ELEM[] =
     TYPE_ELEMENT,                      CONF_VALUE_16_BIT(3),
     &li.explosion_element[3],          EL_PLAYER_4
   },
+  {
+    EL_PLAYER_4,                       -1,
+    TYPE_BOOLEAN,                      CONF_VALUE_8_BIT(13),
+    &li.use_initial_inventory[3],      FALSE
+  },
+  {
+    EL_PLAYER_4,                       -1,
+    TYPE_BOOLEAN,                      CONF_VALUE_8_BIT(14),
+    &li.initial_inventory_size[3],     1
+  },
+  {
+    EL_PLAYER_4,                       -1,
+    TYPE_ELEMENT_LIST,                 CONF_VALUE_BYTES(1),
+    &li.initial_inventory_content[3][0],EL_EMPTY, NULL,
+    &li.initial_inventory_size[3],     1, MAX_INITIAL_INVENTORY_SIZE
+  },
 
   {
     EL_EMERALD,                                -1,
@@ -806,8 +882,8 @@ static struct LevelFileConfigInfo chunk_config_CUSX_base[] =
   {
     -1,                                        -1,
     TYPE_ELEMENT,                      CONF_VALUE_16_BIT(1),
-    &xx_ei.gfx_element,                        EL_EMPTY_SPACE,
-    &yy_ei.gfx_element
+    &xx_ei.gfx_element_initial,                EL_EMPTY_SPACE,
+    &yy_ei.gfx_element_initial
   },
 
   {
@@ -1045,7 +1121,7 @@ static struct LevelFileConfigInfo chunk_config_CUSX_change[] =
   {
     -1,                                        -1,
     TYPE_ELEMENT,                      CONF_VALUE_16_BIT(5),
-    &xx_change.trigger_element,                EL_EMPTY_SPACE
+    &xx_change.initial_trigger_element,        EL_EMPTY_SPACE
   },
 
   {
@@ -1100,6 +1176,12 @@ static struct LevelFileConfigInfo chunk_config_CUSX_change[] =
     &xx_change.action_arg,             CA_ARG_UNDEFINED
   },
 
+  {
+    -1,                                        -1,
+    TYPE_ELEMENT,                      CONF_VALUE_16_BIT(7),
+    &xx_change.action_element,         EL_EMPTY_SPACE
+  },
+
   {
     -1,                                        -1,
     TYPE_CONTENT_LIST,                 CONF_VALUE_BYTES(1),
@@ -1132,7 +1214,7 @@ static struct LevelFileConfigInfo chunk_config_GRPX[] =
   {
     -1,                                        -1,
     TYPE_ELEMENT,                      CONF_VALUE_16_BIT(1),
-    &xx_ei.gfx_element,                        EL_EMPTY_SPACE
+    &xx_ei.gfx_element_initial,                EL_EMPTY_SPACE
   },
 
   {
@@ -1505,8 +1587,10 @@ static void setLevelInfoToDefaults(struct LevelInfo *level)
   *level = li;         /* copy temporary buffer back to level data */
 
   setLevelInfoToDefaults_EM();
+  setLevelInfoToDefaults_SP();
 
   level->native_em_level = &native_em_level;
+  level->native_sp_level = &native_sp_level;
 
   level->file_version = FILE_VERSION_ACTUAL;
   level->game_version = GAME_VERSION_ACTUAL;
@@ -1620,6 +1704,9 @@ static void setLevelInfoToDefaults(struct LevelInfo *level)
 
   level->changed = FALSE;
 
+  /* set all bug compatibility flags to "false" => do not emulate this bug */
+  level->use_action_after_change_bug = FALSE;
+
   if (leveldir_current == NULL)                /* only when dumping level */
     return;
 
@@ -1683,21 +1770,33 @@ static char *getLevelFilenameFromBasename(char *basename)
 
 static int getFileTypeFromBasename(char *basename)
 {
+  /* !!! ALSO SEE COMMENT IN checkForPackageFromBasename() !!! */
+
   static char *filename = NULL;
   struct stat file_status;
 
   /* ---------- try to determine file type from filename ---------- */
 
   /* check for typical filename of a Supaplex level package file */
+#if 1
+  if (strlen(basename) == 10 && strPrefixLower(basename, "levels.d"))
+    return LEVEL_FILE_TYPE_SP;
+#else
   if (strlen(basename) == 10 && (strncmp(basename, "levels.d", 8) == 0 ||
                                 strncmp(basename, "LEVELS.D", 8) == 0))
     return LEVEL_FILE_TYPE_SP;
+#endif
 
   /* check for typical filename of a Diamond Caves II level package file */
-  if (strSuffix(basename, ".dc") ||
-      strSuffix(basename, ".dc2"))
+  if (strSuffixLower(basename, ".dc") ||
+      strSuffixLower(basename, ".dc2"))
     return LEVEL_FILE_TYPE_DC;
 
+  /* check for typical filename of a Sokoban level package file */
+  if (strSuffixLower(basename, ".xsb") &&
+      strchr(basename, '%') == NULL)
+    return LEVEL_FILE_TYPE_SB;
+
   /* ---------- try to determine file type from filesize ---------- */
 
   checked_free(filename);
@@ -1713,6 +1812,14 @@ static int getFileTypeFromBasename(char *basename)
   return LEVEL_FILE_TYPE_UNKNOWN;
 }
 
+static boolean checkForPackageFromBasename(char *basename)
+{
+  /* !!! WON'T WORK ANYMORE IF getFileTypeFromBasename() ALSO DETECTS !!!
+     !!! SINGLE LEVELS (CURRENTLY ONLY DETECTS LEVEL PACKAGES         !!! */
+
+  return (getFileTypeFromBasename(basename) != LEVEL_FILE_TYPE_UNKNOWN);
+}
+
 static char *getSingleLevelBasename(int nr)
 {
   static char basename[MAX_FILENAME_LEN];
@@ -1866,6 +1973,9 @@ static void determineLevelFileInfo_Filename(struct LevelFileInfo *lfi)
 
     setLevelFileInfo_FormatLevelFilename(lfi, filetype,
                                         leveldir_current->level_filename, nr);
+
+    lfi->packed = checkForPackageFromBasename(leveldir_current->level_filename);
+
     if (fileExists(lfi->filename))
       return;
   }
@@ -1950,6 +2060,7 @@ int getMappedElement(int element)
 
     case EL_KEY_OBSOLETE:
       element = EL_KEY_1;
+      break;
 
     case EL_EM_KEY_1_FILE_OBSOLETE:
       element = EL_EM_KEY_1;
@@ -2355,7 +2466,7 @@ static int LoadLevel_CUS3(FILE *file, int chunk_size, struct LevelInfo *level)
     ReadUnusedBytesFromFile(file, 7);
 
     ei->use_gfx_element = getFile8Bit(file);
-    ei->gfx_element = getMappedElement(getFile16BitBE(file));
+    ei->gfx_element_initial = getMappedElement(getFile16BitBE(file));
 
     ei->collect_score_initial = getFile8Bit(file);
     ei->collect_count_initial = getFile8Bit(file);
@@ -2384,7 +2495,7 @@ static int LoadLevel_CUS3(FILE *file, int chunk_size, struct LevelInfo *level)
     ei->change->delay_random = getFile16BitBE(file);
     ei->change->delay_frames = getFile16BitBE(file);
 
-    ei->change->trigger_element = getMappedElement(getFile16BitBE(file));
+    ei->change->initial_trigger_element= getMappedElement(getFile16BitBE(file));
 
     ei->change->explode = getFile8Bit(file);
     ei->change->use_target_content = getFile8Bit(file);
@@ -2454,7 +2565,7 @@ static int LoadLevel_CUS4(FILE *file, int chunk_size, struct LevelInfo *level)
   ei->use_last_ce_value = getFile8Bit(file);
 
   ei->use_gfx_element = getFile8Bit(file);
-  ei->gfx_element = getMappedElement(getFile16BitBE(file));
+  ei->gfx_element_initial = getMappedElement(getFile16BitBE(file));
 
   ei->collect_score_initial = getFile8Bit(file);
   ei->collect_count_initial = getFile8Bit(file);
@@ -2517,7 +2628,7 @@ static int LoadLevel_CUS4(FILE *file, int chunk_size, struct LevelInfo *level)
     change->delay_random = getFile16BitBE(file);
     change->delay_frames = getFile16BitBE(file);
 
-    change->trigger_element = getMappedElement(getFile16BitBE(file));
+    change->initial_trigger_element = getMappedElement(getFile16BitBE(file));
 
     change->explode = getFile8Bit(file);
     change->use_target_content = getFile8Bit(file);
@@ -2587,7 +2698,7 @@ static int LoadLevel_GRP1(FILE *file, int chunk_size, struct LevelInfo *level)
   group->num_elements = getFile8Bit(file);
 
   ei->use_gfx_element = getFile8Bit(file);
-  ei->gfx_element = getMappedElement(getFile16BitBE(file));
+  ei->gfx_element_initial = getMappedElement(getFile16BitBE(file));
 
   group->choice_mode = getFile8Bit(file);
 
@@ -3713,30 +3824,13 @@ void CopyNativeLevel_EM_to_RND(struct LevelInfo *level)
   }
 }
 
-static void LoadLevelFromFileInfo_EM(struct LevelInfo *level,
-                                    struct LevelFileInfo *level_file_info)
-{
-  if (!LoadNativeLevel_EM(level_file_info->filename))
-    level->no_valid_file = TRUE;
-}
-
-void CopyNativeLevel_RND_to_Native(struct LevelInfo *level)
-{
-  if (level->game_engine_type == GAME_ENGINE_TYPE_EM)
-    CopyNativeLevel_RND_to_EM(level);
-}
-
-void CopyNativeLevel_Native_to_RND(struct LevelInfo *level)
-{
-  if (level->game_engine_type == GAME_ENGINE_TYPE_EM)
-    CopyNativeLevel_EM_to_RND(level);
-}
-
 
 /* ------------------------------------------------------------------------- */
 /* functions for loading SP level                                            */
 /* ------------------------------------------------------------------------- */
 
+#if 0
+
 #define NUM_SUPAPLEX_LEVELS_PER_PACKAGE        111
 #define SP_LEVEL_SIZE                  1536
 #define SP_LEVEL_XSIZE                 60
@@ -3927,7 +4021,8 @@ static void LoadLevelFromFileInfo_SP(struct LevelInfo *level,
   }
 
   /* position file stream to the requested level inside the level package */
-  if (fseek(file, nr * SP_LEVEL_SIZE, SEEK_SET) != 0)
+  if (level_file_info->packed &&
+      fseek(file, nr * SP_LEVEL_SIZE, SEEK_SET) != 0)
   {
     level->no_valid_file = TRUE;
 
@@ -4081,6 +4176,187 @@ static void LoadLevelFromFileInfo_SP(struct LevelInfo *level,
     *level = multipart_level;
 }
 
+#endif
+
+void CopyNativeLevel_RND_to_SP(struct LevelInfo *level)
+{
+  struct LevelInfo_SP *level_sp = level->native_sp_level;
+  LevelInfoType *header = &level_sp->header;
+  int i, x, y;
+
+  level_sp->width = level->fieldx;
+  level_sp->height = level->fieldy;
+
+  for (x = 0; x < level->fieldx; x++)
+  {
+    for (y = 0; y < level->fieldy; y++)
+    {
+      int element_old = level->field[x][y];
+      int element_new;
+
+      if (element_old >= EL_SP_START &&
+         element_old <= EL_SP_END)
+       element_new = element_old - EL_SP_START;
+      else if (element_old == EL_EMPTY_SPACE)
+       element_new = 0x00;
+      else if (element_old == EL_INVISIBLE_WALL)
+       element_new = 0x28;
+      else
+       element_new = 0x20;     /* map unknown elements to yellow "hardware" */
+
+      level_sp->playfield[x][y] = element_new;
+    }
+  }
+
+  header->InitialGravity = (level->initial_player_gravity[0] ? 1 : 0);
+
+  for (i = 0; i < SP_LEVEL_NAME_LEN; i++)
+    header->LevelTitle[i] = level->name[i];
+  /* !!! NO STRING TERMINATION IN SUPAPLEX VB CODE YET -- FIX THIS !!! */
+
+  header->InfotronsNeeded = level->gems_needed;
+
+  /* !!! ADD SPECIAL PORT DATABASE STUFF !!! */
+}
+
+void CopyNativeLevel_SP_to_RND(struct LevelInfo *level)
+{
+  struct LevelInfo_SP *level_sp = level->native_sp_level;
+  LevelInfoType *header = &level_sp->header;
+  int i, x, y;
+
+  level->fieldx = level_sp->width;
+  level->fieldy = level_sp->height;
+
+  for (x = 0; x < level->fieldx; x++)
+  {
+    for (y = 0; y < level->fieldy; y++)
+    {
+      int element_old = level_sp->playfield[x][y];
+      int element_new;
+
+      if (element_old <= 0x27)
+       element_new = getMappedElement(EL_SP_START + element_old);
+      else if (element_old == 0x28)
+       element_new = EL_INVISIBLE_WALL;
+      else
+      {
+       Error(ERR_WARN, "invalid element %d at position %d, %d",
+             element_old, x, y);
+
+       element_new = EL_UNKNOWN;
+      }
+
+      level->field[x][y] = element_new;
+    }
+  }
+
+  for (i = 0; i < MAX_PLAYERS; i++)
+    level->initial_player_gravity[i] =
+      (header->InitialGravity == 1 ? TRUE : FALSE);
+
+  for (i = 0; i < SP_LEVEL_NAME_LEN; i++)
+    level->name[i] = header->LevelTitle[i];
+  level->name[SP_LEVEL_NAME_LEN] = '\0';
+
+  level->gems_needed = header->InfotronsNeeded;
+
+  for (i = 0; i < header->SpecialPortCount; i++)
+  {
+    SpecialPortType *port = &header->SpecialPort[i];
+    int port_location = port->PortLocation;
+    int gravity = port->Gravity;
+    int port_x, port_y, port_element;
+
+    port_x = (port_location / 2) % level->fieldx;
+    port_y = (port_location / 2) / level->fieldx;
+
+    if (port_x < 0 || port_x >= level->fieldx ||
+       port_y < 0 || port_y >= level->fieldy)
+    {
+      Error(ERR_WARN, "special port position (%d, %d) out of bounds",
+           port_x, port_y);
+
+      continue;
+    }
+
+    port_element = level->field[port_x][port_y];
+
+    if (port_element < EL_SP_GRAVITY_PORT_RIGHT ||
+       port_element > EL_SP_GRAVITY_PORT_UP)
+    {
+      Error(ERR_WARN, "no special port at position (%d, %d)", port_x, port_y);
+
+      continue;
+    }
+
+    /* change previous (wrong) gravity inverting special port to either
+       gravity enabling special port or gravity disabling special port */
+    level->field[port_x][port_y] +=
+      (gravity == 1 ? EL_SP_GRAVITY_ON_PORT_RIGHT :
+       EL_SP_GRAVITY_OFF_PORT_RIGHT) - EL_SP_GRAVITY_PORT_RIGHT;
+  }
+
+  /* change special gravity ports without database entries to normal ports */
+  for (x = 0; x < level->fieldx; x++)
+    for (y = 0; y < level->fieldy; y++)
+      if (level->field[x][y] >= EL_SP_GRAVITY_PORT_RIGHT &&
+         level->field[x][y] <= EL_SP_GRAVITY_PORT_UP)
+       level->field[x][y] += EL_SP_PORT_RIGHT - EL_SP_GRAVITY_PORT_RIGHT;
+
+  level->time = 0;                     /* no time limit */
+  level->amoeba_speed = 0;
+  level->time_magic_wall = 0;
+  level->time_wheel = 0;
+  level->amoeba_content = EL_EMPTY;
+
+#if 1
+  /* original Supaplex does not use score values -- use default values */
+#else
+  for (i = 0; i < LEVEL_SCORE_ELEMENTS; i++)
+    level->score[i] = 0;
+#endif
+
+  /* there are no yamyams in supaplex levels */
+  for (i = 0; i < level->num_yamyam_contents; i++)
+    for (x = 0; x < 3; x++)
+      for (y = 0; y < 3; y++)
+       level->yamyam_content[i].e[x][y] = EL_EMPTY;
+}
+
+static void setTapeInfoToDefaults();
+
+static void CopyNativeTape_SP_to_RND(struct LevelInfo *level)
+{
+  struct LevelInfo_SP *level_sp = level->native_sp_level;
+  struct DemoInfo_SP *demo = &level_sp->demo;
+  int i;
+
+  /* always start with reliable default values */
+  setTapeInfoToDefaults();
+
+  tape.level_nr = demo->level_nr;      /* (currently not used) */
+  tape.length = demo->length - 1;      /* without "end of demo" byte */
+  tape.random_seed = level_sp->header.DemoRandomSeed;
+
+  // tape.date = <SET FROM FILE DATE OF *.SP FILE>
+
+  for (i = 0; i < demo->length - 1; i++)
+  {
+    int demo_action = demo->data[i] & 0x0f;
+    int demo_repeat = (demo->data[i] & 0xf0) >> 4;
+
+    tape.pos[i].action[0] = map_key_SP_to_RND(demo_action);
+    tape.pos[i].delay = demo_repeat + 1;
+  }
+
+  tape.length_seconds = GetTapeLength();
+}
+
+
+/* ------------------------------------------------------------------------- */
+/* functions for loading DC level                                            */
+/* ------------------------------------------------------------------------- */
 
 #define DC_LEVEL_HEADER_SIZE           344
 
@@ -6051,6 +6327,353 @@ static void LoadLevelFromFileInfo_DC(struct LevelInfo *level,
 #endif
 
 
+/* ------------------------------------------------------------------------- */
+/* functions for loading SB level                                            */
+/* ------------------------------------------------------------------------- */
+
+int getMappedElement_SB(int element_ascii, boolean use_ces)
+{
+  static struct
+  {
+    int ascii;
+    int sb;
+    int ce;
+  }
+  sb_element_mapping[] =
+  {
+    { ' ', EL_EMPTY,                EL_CUSTOM_1 },  /* floor (space) */
+    { '#', EL_STEELWALL,            EL_CUSTOM_2 },  /* wall */
+    { '@', EL_PLAYER_1,             EL_CUSTOM_3 },  /* player */
+    { '$', EL_SOKOBAN_OBJECT,       EL_CUSTOM_4 },  /* box */
+    { '.', EL_SOKOBAN_FIELD_EMPTY,  EL_CUSTOM_5 },  /* goal square */
+    { '*', EL_SOKOBAN_FIELD_FULL,   EL_CUSTOM_6 },  /* box on goal square */
+    { '+', EL_SOKOBAN_FIELD_PLAYER, EL_CUSTOM_7 },  /* player on goal square */
+    { '_', EL_INVISIBLE_STEELWALL,  EL_CUSTOM_8 },  /* floor beyond border */
+
+    { 0,   -1,                      -1          },
+  };
+
+  int i;
+
+  for (i = 0; sb_element_mapping[i].ascii != 0; i++)
+    if (element_ascii == sb_element_mapping[i].ascii)
+      return (use_ces ? sb_element_mapping[i].ce : sb_element_mapping[i].sb);
+
+  return EL_UNDEFINED;
+}
+
+static void LoadLevelFromFileInfo_SB(struct LevelInfo *level,
+                                    struct LevelFileInfo *level_file_info)
+{
+  char *filename = level_file_info->filename;
+  char line[MAX_LINE_LEN], line_raw[MAX_LINE_LEN], previous_line[MAX_LINE_LEN];
+  char last_comment[MAX_LINE_LEN];
+  char level_name[MAX_LINE_LEN];
+  char *line_ptr;
+  FILE *file;
+  int num_levels_to_skip = level_file_info->nr - leveldir_current->first_level;
+  boolean read_continued_line = FALSE;
+  boolean reading_playfield = FALSE;
+  boolean got_valid_playfield_line = FALSE;
+  boolean invalid_playfield_char = FALSE;
+  boolean load_xsb_to_ces = options.cmd_switches & CMD_SWITCH_LOAD_XSB_TO_CES;
+  int file_level_nr = 0;
+  int line_nr = 0;
+  int x, y;
+
+#if 0
+  printf("::: looking for level number %d [%d]\n",
+        level_file_info->nr, num_levels_to_skip);
+#endif
+
+  last_comment[0] = '\0';
+  level_name[0] = '\0';
+
+  if (!(file = fopen(filename, MODE_READ)))
+  {
+    level->no_valid_file = TRUE;
+
+    Error(ERR_WARN, "cannot read level '%s' -- using empty level", filename);
+
+    return;
+  }
+
+  while (!feof(file))
+  {
+    /* level successfully read, but next level may follow here */
+    if (!got_valid_playfield_line && reading_playfield)
+    {
+#if 0
+      printf("::: read complete playfield\n");
+#endif
+
+      /* read playfield from single level file -- skip remaining file */
+      if (!level_file_info->packed)
+       break;
+
+      if (file_level_nr >= num_levels_to_skip)
+       break;
+
+      file_level_nr++;
+
+      last_comment[0] = '\0';
+      level_name[0] = '\0';
+
+      reading_playfield = FALSE;
+    }
+
+    got_valid_playfield_line = FALSE;
+
+    /* read next line of input file */
+    if (!fgets(line, MAX_LINE_LEN, file))
+      break;
+
+    /* check if line was completely read and is terminated by line break */
+    if (strlen(line) > 0 && line[strlen(line) - 1] == '\n')
+      line_nr++;
+
+    /* cut trailing line break (this can be newline and/or carriage return) */
+    for (line_ptr = &line[strlen(line)]; line_ptr >= line; line_ptr--)
+      if ((*line_ptr == '\n' || *line_ptr == '\r') && *(line_ptr + 1) == '\0')
+        *line_ptr = '\0';
+
+    /* copy raw input line for later use (mainly debugging output) */
+    strcpy(line_raw, line);
+
+    if (read_continued_line)
+    {
+      /* append new line to existing line, if there is enough space */
+      if (strlen(previous_line) + strlen(line_ptr) < MAX_LINE_LEN)
+        strcat(previous_line, line_ptr);
+
+      strcpy(line, previous_line);      /* copy storage buffer to line */
+
+      read_continued_line = FALSE;
+    }
+
+    /* if the last character is '\', continue at next line */
+    if (strlen(line) > 0 && line[strlen(line) - 1] == '\\')
+    {
+      line[strlen(line) - 1] = '\0';    /* cut off trailing backslash */
+      strcpy(previous_line, line);      /* copy line to storage buffer */
+
+      read_continued_line = TRUE;
+
+      continue;
+    }
+
+    /* skip empty lines */
+    if (line[0] == '\0')
+      continue;
+
+    /* extract comment text from comment line */
+    if (line[0] == ';')
+    {
+      for (line_ptr = line; *line_ptr; line_ptr++)
+        if (*line_ptr != ' ' && *line_ptr != '\t' && *line_ptr != ';')
+          break;
+
+      strcpy(last_comment, line_ptr);
+
+#if 0
+      printf("::: found comment '%s' in line %d\n", last_comment, line_nr);
+#endif
+
+      continue;
+    }
+
+    /* extract level title text from line containing level title */
+    if (line[0] == '\'')
+    {
+      strcpy(level_name, &line[1]);
+
+      if (strlen(level_name) > 0 && level_name[strlen(level_name) - 1] == '\'')
+       level_name[strlen(level_name) - 1] = '\0';
+
+#if 0
+      printf("::: found level name '%s' in line %d\n", level_name, line_nr);
+#endif
+
+      continue;
+    }
+
+    /* skip lines containing only spaces (or empty lines) */
+    for (line_ptr = line; *line_ptr; line_ptr++)
+      if (*line_ptr != ' ')
+       break;
+    if (*line_ptr == '\0')
+      continue;
+
+    /* at this point, we have found a line containing part of a playfield */
+
+#if 0
+    printf("::: found playfield row in line %d\n", line_nr);
+#endif
+
+    got_valid_playfield_line = TRUE;
+
+    if (!reading_playfield)
+    {
+      reading_playfield = TRUE;
+      invalid_playfield_char = FALSE;
+
+      for (x = 0; x < MAX_LEV_FIELDX; x++)
+       for (y = 0; y < MAX_LEV_FIELDY; y++)
+         level->field[x][y] = getMappedElement_SB(' ', load_xsb_to_ces);
+
+      level->fieldx = 0;
+      level->fieldy = 0;
+
+      /* start with topmost tile row */
+      y = 0;
+    }
+
+    /* skip playfield line if larger row than allowed */
+    if (y >= MAX_LEV_FIELDY)
+      continue;
+
+    /* start with leftmost tile column */
+    x = 0;
+
+    /* read playfield elements from line */
+    for (line_ptr = line; *line_ptr; line_ptr++)
+    {
+      int mapped_sb_element = getMappedElement_SB(*line_ptr, load_xsb_to_ces);
+
+      /* stop parsing playfield line if larger column than allowed */
+      if (x >= MAX_LEV_FIELDX)
+       break;
+
+      if (mapped_sb_element == EL_UNDEFINED)
+      {
+       invalid_playfield_char = TRUE;
+
+       break;
+      }
+
+      level->field[x][y] = mapped_sb_element;
+
+      /* continue with next tile column */
+      x++;
+
+      level->fieldx = MAX(x, level->fieldx);
+    }
+
+    if (invalid_playfield_char)
+    {
+      /* if first playfield line, treat invalid lines as comment lines */
+      if (y == 0)
+       reading_playfield = FALSE;
+
+      continue;
+    }
+
+    /* continue with next tile row */
+    y++;
+  }
+
+  fclose(file);
+
+  level->fieldy = y;
+
+  level->fieldx = MIN(MAX(MIN_LEV_FIELDX, level->fieldx), MAX_LEV_FIELDX);
+  level->fieldy = MIN(MAX(MIN_LEV_FIELDY, level->fieldy), MAX_LEV_FIELDY);
+
+  if (!reading_playfield)
+  {
+    level->no_valid_file = TRUE;
+
+    Error(ERR_WARN, "cannot read level '%s' -- using empty level", filename);
+
+    return;
+  }
+
+  if (*level_name != '\0')
+  {
+    strncpy(level->name, level_name, MAX_LEVEL_NAME_LEN);
+    level->name[MAX_LEVEL_NAME_LEN] = '\0';
+
+#if 0
+    printf(":1: level name: '%s'\n", level->name);
+#endif
+  }
+  else if (*last_comment != '\0')
+  {
+    strncpy(level->name, last_comment, MAX_LEVEL_NAME_LEN);
+    level->name[MAX_LEVEL_NAME_LEN] = '\0';
+
+#if 0
+    printf(":2: level name: '%s'\n", level->name);
+#endif
+  }
+  else
+  {
+    sprintf(level->name, "--> Level %d <--", level_file_info->nr);
+  }
+
+  /* set all empty fields beyond the border walls to invisible steel wall */
+  for (y = 0; y < level->fieldy; y++) for (x = 0; x < level->fieldx; x++)
+  {
+    if ((x == 0 || x == level->fieldx - 1 ||
+        y == 0 || y == level->fieldy - 1) &&
+       level->field[x][y] == getMappedElement_SB(' ', load_xsb_to_ces))
+      FloodFillLevel(x, y, getMappedElement_SB('_', load_xsb_to_ces),
+                    level->field, level->fieldx, level->fieldy);
+  }
+
+  if (load_xsb_to_ces)
+  {
+    level->time = 0;
+    level->use_step_counter = TRUE;
+
+    level->initial_player_stepsize[0] = STEPSIZE_SLOW;
+
+    level->use_custom_template = TRUE;
+  }
+}
+
+
+/* ------------------------------------------------------------------------- */
+/* functions for handling native levels                                      */
+/* ------------------------------------------------------------------------- */
+
+static void LoadLevelFromFileInfo_EM(struct LevelInfo *level,
+                                    struct LevelFileInfo *level_file_info)
+{
+  if (!LoadNativeLevel_EM(level_file_info->filename))
+    level->no_valid_file = TRUE;
+}
+
+static void LoadLevelFromFileInfo_SP(struct LevelInfo *level,
+                                    struct LevelFileInfo *level_file_info)
+{
+  int pos = 0;
+
+  /* determine position of requested level inside level package */
+  if (level_file_info->packed)
+    pos = level_file_info->nr - leveldir_current->first_level;
+
+  if (!LoadNativeLevel_SP(level_file_info->filename, pos))
+    level->no_valid_file = TRUE;
+}
+
+void CopyNativeLevel_RND_to_Native(struct LevelInfo *level)
+{
+  if (level->game_engine_type == GAME_ENGINE_TYPE_EM)
+    CopyNativeLevel_RND_to_EM(level);
+  else if (level->game_engine_type == GAME_ENGINE_TYPE_SP)
+    CopyNativeLevel_RND_to_SP(level);
+}
+
+void CopyNativeLevel_Native_to_RND(struct LevelInfo *level)
+{
+  if (level->game_engine_type == GAME_ENGINE_TYPE_EM)
+    CopyNativeLevel_EM_to_RND(level);
+  else if (level->game_engine_type == GAME_ENGINE_TYPE_SP)
+    CopyNativeLevel_SP_to_RND(level);
+}
+
+
 /* ------------------------------------------------------------------------- */
 /* functions for loading generic level                                       */
 /* ------------------------------------------------------------------------- */
@@ -6074,12 +6697,17 @@ void LoadLevelFromFileInfo(struct LevelInfo *level,
 
     case LEVEL_FILE_TYPE_SP:
       LoadLevelFromFileInfo_SP(level, level_file_info);
+      level->game_engine_type = GAME_ENGINE_TYPE_SP;
       break;
 
     case LEVEL_FILE_TYPE_DC:
       LoadLevelFromFileInfo_DC(level, level_file_info);
       break;
 
+    case LEVEL_FILE_TYPE_SB:
+      LoadLevelFromFileInfo_SB(level, level_file_info);
+      break;
+
     default:
       LoadLevelFromFileInfo_RND(level, level_file_info);
       break;
@@ -6239,7 +6867,7 @@ static void LoadLevel_InitVersion(struct LevelInfo *level, char *filename)
 
   /* try to detect and fix "Snake Bite" levels, which are broken with 3.2.0 */
   {
-    int element = EL_CUSTOM_START + 255;
+    int element = EL_CUSTOM_256;
     struct ElementInfo *ei = &element_info[element];
     struct ElementChangeInfo *change = &ei->change_page[0];
 
@@ -6259,9 +6887,67 @@ static void LoadLevel_InitVersion(struct LevelInfo *level, char *filename)
       change->target_element = EL_PLAYER_1;
   }
 
+#if 1
+  /* try to detect and fix "Zelda" style levels, which are broken with 3.2.5 */
+  if (level->game_version < VERSION_IDENT(3,2,5,0))
+  {
+    /* This is needed to fix a problem that was caused by a bugfix in function
+       game.c/CheckTriggeredElementChangeExt() introduced with 3.2.5 that
+       corrects the behaviour when a custom element changes to another custom
+       element with a higher element number that has change actions defined.
+       Normally, only one change per frame is allowed for custom elements.
+       Therefore, it is checked if a custom element already changed in the
+       current frame; if it did, subsequent changes are suppressed.
+       Unfortunately, this is only checked for element changes, but not for
+       change actions, which are still executed. As the function above loops
+       through all custom elements from lower to higher, an element change
+       resulting in a lower CE number won't be checked again, while a target
+       element with a higher number will also be checked, and potential change
+       actions will get executed for this CE, too (which is wrong), while
+       further changes are ignored (which is correct). As this bugfix breaks
+       Zelda II (and introduces graphical bugs to Zelda I, and also breaks a
+       few other levels like Alan Bond's "FMV"), allow the previous, incorrect
+       behaviour for existing levels and tapes that make use of this bug */
+
+    level->use_action_after_change_bug = TRUE;
+  }
+#else
+  /* !!! THIS DOES NOT FIX "Zelda I" (GRAPHICALLY) AND "Alan's FMV" LEVELS */
+  /* try to detect and fix "Zelda II" levels, which are broken with 3.2.5 */
+  {
+    int element = EL_CUSTOM_16;
+    struct ElementInfo *ei = &element_info[element];
+
+    /* This is needed to fix a problem that was caused by a bugfix in function
+       game.c/CheckTriggeredElementChangeExt() introduced with 3.2.5 that
+       corrects the behaviour when a custom element changes to another custom
+       element with a higher element number that has change actions defined.
+       Normally, only one change per frame is allowed for custom elements.
+       Therefore, it is checked if a custom element already changed in the
+       current frame; if it did, subsequent changes are suppressed.
+       Unfortunately, this is only checked for element changes, but not for
+       change actions, which are still executed. As the function above loops
+       through all custom elements from lower to higher, an element change
+       resulting in a lower CE number won't be checked again, while a target
+       element with a higher number will also be checked, and potential change
+       actions will get executed for this CE, too (which is wrong), while
+       further changes are ignored (which is correct). As this bugfix breaks
+       Zelda II (but no other levels), allow the previous, incorrect behaviour
+       for this outstanding level set to not break the game or existing tapes */
+
+    if (strncmp(leveldir_current->identifier, "zelda2", 6) == 0 ||
+       strncmp(ei->description, "scanline - row 1", 16) == 0)
+      level->use_action_after_change_bug = TRUE;
+  }
+#endif
+
   /* not centering level after relocating player was default only in 3.2.3 */
   if (level->game_version == VERSION_IDENT(3,2,3,0))   /* (no pre-releases) */
     level->shifted_relocation = TRUE;
+
+  /* EM style elements always chain-exploded in R'n'D engine before 3.2.6 */
+  if (level->game_version < VERSION_IDENT(3,2,6,0))
+    level->em_explodes_by_fire = TRUE;
 }
 
 static void LoadLevel_InitElements(struct LevelInfo *level, char *filename)
@@ -6393,6 +7079,7 @@ static void LoadLevel_InitElements(struct LevelInfo *level, char *filename)
   /* initialize element properties for level editor etc. */
   InitElementPropertiesEngine(level->game_version);
   InitElementPropertiesAfterLoading(level->game_version);
+  InitElementPropertiesGfxElement();
 }
 
 static void LoadLevel_InitPlayfield(struct LevelInfo *level, char *filename)
@@ -6771,7 +7458,7 @@ static void SaveLevel_CUS3(FILE *file, struct LevelInfo *level,
        WriteUnusedBytesToFile(file, 7);
 
        putFile8Bit(file, ei->use_gfx_element);
-       putFile16BitBE(file, ei->gfx_element);
+       putFile16BitBE(file, ei->gfx_element_initial);
 
        putFile8Bit(file, ei->collect_score_initial);
        putFile8Bit(file, ei->collect_count_initial);
@@ -6797,7 +7484,7 @@ static void SaveLevel_CUS3(FILE *file, struct LevelInfo *level,
        putFile16BitBE(file, ei->change->delay_random);
        putFile16BitBE(file, ei->change->delay_frames);
 
-       putFile16BitBE(file, ei->change->trigger_element);
+       putFile16BitBE(file, ei->change->initial_trigger_element);
 
        putFile8Bit(file, ei->change->explode);
        putFile8Bit(file, ei->change->use_target_content);
@@ -6850,7 +7537,7 @@ static void SaveLevel_CUS4(FILE *file, struct LevelInfo *level, int element)
   putFile8Bit(file, ei->use_last_ce_value);
 
   putFile8Bit(file, ei->use_gfx_element);
-  putFile16BitBE(file, ei->gfx_element);
+  putFile16BitBE(file, ei->gfx_element_initial);
 
   putFile8Bit(file, ei->collect_score_initial);
   putFile8Bit(file, ei->collect_count_initial);
@@ -6909,7 +7596,7 @@ static void SaveLevel_CUS4(FILE *file, struct LevelInfo *level, int element)
     putFile16BitBE(file, change->delay_random);
     putFile16BitBE(file, change->delay_frames);
 
-    putFile16BitBE(file, change->trigger_element);
+    putFile16BitBE(file, change->initial_trigger_element);
 
     putFile8Bit(file, change->explode);
     putFile8Bit(file, change->use_target_content);
@@ -6961,7 +7648,7 @@ static void SaveLevel_GRP1(FILE *file, struct LevelInfo *level, int element)
   putFile8Bit(file, group->num_elements);
 
   putFile8Bit(file, ei->use_gfx_element);
-  putFile16BitBE(file, ei->gfx_element);
+  putFile16BitBE(file, ei->gfx_element_initial);
 
   putFile8Bit(file, group->choice_mode);
 
@@ -7693,6 +8380,13 @@ void LoadSolutionTape(int nr)
   char *filename = getSolutionTapeFilename(nr);
 
   LoadTapeFromFilename(filename);
+
+#if 1
+  if (TAPE_IS_EMPTY(tape) &&
+      level.game_engine_type == GAME_ENGINE_TYPE_SP &&
+      level.native_sp_level->demo.is_available)
+    CopyNativeTape_SP_to_RND(&level);
+#endif
 }
 
 static void SaveTape_VERS(FILE *file, struct TapeInfo *tape)
@@ -8007,13 +8701,13 @@ void SaveScore(int nr)
 #define SETUP_TOKEN_INPUT_ON_FOCUS             22
 #define SETUP_TOKEN_PREFER_AGA_GRAPHICS                23
 #define SETUP_TOKEN_GAME_FRAME_DELAY           24
-#define SETUP_TOKEN_GRAPHICS_SET               25
-#define SETUP_TOKEN_SOUNDS_SET                 26
-#define SETUP_TOKEN_MUSIC_SET                  27
-#define SETUP_TOKEN_OVERRIDE_LEVEL_GRAPHICS    28
-#define SETUP_TOKEN_OVERRIDE_LEVEL_SOUNDS      29
-#define SETUP_TOKEN_OVERRIDE_LEVEL_MUSIC       30
-#define SETUP_TOKEN_AUTO_OVERRIDE_ARTWORK      31
+#define SETUP_TOKEN_SP_SHOW_BORDER_ELEMENTS    25
+#define SETUP_TOKEN_GRAPHICS_SET               26
+#define SETUP_TOKEN_SOUNDS_SET                 27
+#define SETUP_TOKEN_MUSIC_SET                  28
+#define SETUP_TOKEN_OVERRIDE_LEVEL_GRAPHICS    29
+#define SETUP_TOKEN_OVERRIDE_LEVEL_SOUNDS      30
+#define SETUP_TOKEN_OVERRIDE_LEVEL_MUSIC       31
 
 #define NUM_GLOBAL_SETUP_TOKENS                        32
 
@@ -8112,38 +8806,38 @@ static struct OptionInfo soi;
 
 static struct TokenInfo global_setup_tokens[] =
 {
-  { TYPE_STRING, &si.player_name,      "player_name"                   },
-  { TYPE_SWITCH, &si.sound,            "sound"                         },
-  { TYPE_SWITCH, &si.sound_loops,      "repeating_sound_loops"         },
-  { TYPE_SWITCH, &si.sound_music,      "background_music"              },
-  { TYPE_SWITCH, &si.sound_simple,     "simple_sound_effects"          },
-  { TYPE_SWITCH, &si.toons,            "toons"                         },
-  { TYPE_SWITCH, &si.scroll_delay,     "scroll_delay"                  },
-  { TYPE_INTEGER,&si.scroll_delay_value,"scroll_delay_value"           },
-  { TYPE_SWITCH, &si.soft_scrolling,   "soft_scrolling"                },
-  { TYPE_SWITCH, &si.fade_screens,     "fade_screens"                  },
-  { TYPE_SWITCH, &si.autorecord,       "automatic_tape_recording"      },
-  { TYPE_SWITCH, &si.show_titlescreen, "show_titlescreen"              },
-  { TYPE_SWITCH, &si.quick_doors,      "quick_doors"                   },
-  { TYPE_SWITCH, &si.team_mode,                "team_mode"                     },
-  { TYPE_SWITCH, &si.handicap,         "handicap"                      },
-  { TYPE_SWITCH, &si.skip_levels,      "skip_levels"                   },
-  { TYPE_SWITCH, &si.time_limit,       "time_limit"                    },
-  { TYPE_SWITCH, &si.fullscreen,       "fullscreen"                    },
-  { TYPE_STRING, &si.fullscreen_mode,  "fullscreen_mode"               },
-  { TYPE_SWITCH, &si.ask_on_escape,    "ask_on_escape"                 },
-  { TYPE_SWITCH, &si.ask_on_escape_editor, "ask_on_escape_editor"      },
-  { TYPE_SWITCH, &si.quick_switch,     "quick_player_switch"           },
-  { TYPE_SWITCH, &si.input_on_focus,   "input_on_focus"                },
-  { TYPE_SWITCH, &si.prefer_aga_graphics, "prefer_aga_graphics"                },
-  { TYPE_INTEGER,&si.game_frame_delay, "game_frame_delay"              },
-  { TYPE_STRING, &si.graphics_set,     "graphics_set"                  },
-  { TYPE_STRING, &si.sounds_set,       "sounds_set"                    },
-  { TYPE_STRING, &si.music_set,                "music_set"                     },
-  { TYPE_SWITCH, &si.override_level_graphics, "override_level_graphics"        },
-  { TYPE_SWITCH, &si.override_level_sounds,   "override_level_sounds"  },
-  { TYPE_SWITCH, &si.override_level_music,    "override_level_music"   },
-  { TYPE_SWITCH, &si.auto_override_artwork,   "auto_override_artwork"  },
+  { TYPE_STRING, &si.player_name,             "player_name"            },
+  { TYPE_SWITCH, &si.sound,                   "sound"                  },
+  { TYPE_SWITCH, &si.sound_loops,             "repeating_sound_loops"  },
+  { TYPE_SWITCH, &si.sound_music,             "background_music"       },
+  { TYPE_SWITCH, &si.sound_simple,            "simple_sound_effects"   },
+  { TYPE_SWITCH, &si.toons,                   "toons"                  },
+  { TYPE_SWITCH, &si.scroll_delay,            "scroll_delay"           },
+  { TYPE_INTEGER,&si.scroll_delay_value,      "scroll_delay_value"     },
+  { TYPE_SWITCH, &si.soft_scrolling,          "soft_scrolling"         },
+  { TYPE_SWITCH, &si.fade_screens,            "fade_screens"           },
+  { TYPE_SWITCH, &si.autorecord,              "automatic_tape_recording"},
+  { TYPE_SWITCH, &si.show_titlescreen,        "show_titlescreen"       },
+  { TYPE_SWITCH, &si.quick_doors,             "quick_doors"            },
+  { TYPE_SWITCH, &si.team_mode,               "team_mode"              },
+  { TYPE_SWITCH, &si.handicap,                "handicap"               },
+  { TYPE_SWITCH, &si.skip_levels,             "skip_levels"            },
+  { TYPE_SWITCH, &si.time_limit,              "time_limit"             },
+  { TYPE_SWITCH, &si.fullscreen,              "fullscreen"             },
+  { TYPE_STRING, &si.fullscreen_mode,         "fullscreen_mode"                },
+  { TYPE_SWITCH, &si.ask_on_escape,           "ask_on_escape"          },
+  { TYPE_SWITCH, &si.ask_on_escape_editor,    "ask_on_escape_editor"   },
+  { TYPE_SWITCH, &si.quick_switch,            "quick_player_switch"    },
+  { TYPE_SWITCH, &si.input_on_focus,          "input_on_focus"         },
+  { TYPE_SWITCH, &si.prefer_aga_graphics,     "prefer_aga_graphics"    },
+  { TYPE_INTEGER,&si.game_frame_delay,        "game_frame_delay"       },
+  { TYPE_SWITCH, &si.sp_show_border_elements, "sp_show_border_elements"        },
+  { TYPE_STRING, &si.graphics_set,            "graphics_set"           },
+  { TYPE_STRING, &si.sounds_set,              "sounds_set"             },
+  { TYPE_STRING, &si.music_set,               "music_set"              },
+  { TYPE_SWITCH3,&si.override_level_graphics, "override_level_graphics"        },
+  { TYPE_SWITCH3,&si.override_level_sounds,   "override_level_sounds"  },
+  { TYPE_SWITCH3,&si.override_level_music,    "override_level_music"   },
 };
 
 static boolean not_used = FALSE;
@@ -8291,6 +8985,7 @@ static void setSetupInfoToDefaults(struct SetupInfo *si)
   si->input_on_focus = FALSE;
   si->prefer_aga_graphics = TRUE;
   si->game_frame_delay = GAME_FRAME_DELAY;
+  si->sp_show_border_elements = FALSE;
 
   si->graphics_set = getStringCopy(GFX_DEFAULT_SUBDIR);
   si->sounds_set = getStringCopy(SND_DEFAULT_SUBDIR);
@@ -8298,7 +8993,6 @@ static void setSetupInfoToDefaults(struct SetupInfo *si)
   si->override_level_graphics = FALSE;
   si->override_level_sounds = FALSE;
   si->override_level_music = FALSE;
-  si->auto_override_artwork = FALSE;
 
   si->editor.el_boulderdash            = TRUE;
   si->editor.el_emerald_mine           = TRUE;
@@ -8357,7 +9051,9 @@ static void setSetupInfoToDefaults(struct SetupInfo *si)
 #if defined(CREATE_SPECIAL_EDITION_RND_JUE)
   si->handicap = FALSE;
   si->fullscreen = TRUE;
-  si->auto_override_artwork = TRUE;
+  si->override_level_graphics = AUTO;
+  si->override_level_sounds = AUTO;
+  si->override_level_music = AUTO;
 #endif
 }
 
@@ -9626,9 +10322,9 @@ void LoadHelpTextInfo()
 }
 
 
-/* ------------------------------------------------------------------------- *
- * convert levels
- * ------------------------------------------------------------------------- */
+/* ------------------------------------------------------------------------- */
+/* convert levels                                                            */
+/* ------------------------------------------------------------------------- */
 
 #define MAX_NUM_CONVERT_LEVELS         1000
 
@@ -9738,3 +10434,165 @@ void ConvertLevels()
 
   CloseAllAndExit(0);
 }
+
+
+/* ------------------------------------------------------------------------- */
+/* create and save images for use in level sketches (raw BMP format)         */
+/* ------------------------------------------------------------------------- */
+
+void CreateLevelSketchImages()
+{
+#if defined(TARGET_SDL)
+  Bitmap *bitmap1;
+  Bitmap *bitmap2;
+  int i;
+
+  InitElementPropertiesGfxElement();
+
+  bitmap1 = CreateBitmap(TILEX, TILEY, DEFAULT_DEPTH);
+  bitmap2 = CreateBitmap(MINI_TILEX, MINI_TILEY, DEFAULT_DEPTH);
+
+  for (i = 0; i < NUM_FILE_ELEMENTS; i++)
+  {
+    Bitmap *src_bitmap;
+    int src_x, src_y;
+    int element = getMappedElement(i);
+    int graphic = el2edimg(element);
+    char basename1[16];
+    char basename2[16];
+    char *filename1;
+    char *filename2;
+
+    sprintf(basename1, "%03d.bmp", i);
+    sprintf(basename2, "%03ds.bmp", i);
+
+    filename1 = getPath2(global.create_images_dir, basename1);
+    filename2 = getPath2(global.create_images_dir, basename2);
+
+    getGraphicSource(graphic, 0, &src_bitmap, &src_x, &src_y);
+    BlitBitmap(src_bitmap, bitmap1, src_x, src_y, TILEX, TILEY, 0, 0);
+
+    if (SDL_SaveBMP(bitmap1->surface, filename1) != 0)
+      Error(ERR_EXIT, "cannot save level sketch image file '%s'", filename1);
+
+    getMiniGraphicSource(graphic, &src_bitmap, &src_x, &src_y);
+    BlitBitmap(src_bitmap, bitmap2, src_x, src_y, MINI_TILEX, MINI_TILEY, 0, 0);
+
+    if (SDL_SaveBMP(bitmap2->surface, filename2) != 0)
+      Error(ERR_EXIT, "cannot save level sketch image file '%s'", filename2);
+
+    free(filename1);
+    free(filename2);
+
+    if (options.debug)
+      printf("%03d `%03d%c", i, i, (i % 10 < 9 ? ' ' : '\n'));
+  }
+
+  FreeBitmap(bitmap1);
+  FreeBitmap(bitmap2);
+
+  if (options.debug)
+    printf("\n");
+
+  Error(ERR_INFO, "%d normal and small images created", NUM_FILE_ELEMENTS);
+
+  CloseAllAndExit(0);
+#endif
+}
+
+
+/* ------------------------------------------------------------------------- */
+/* create and save images for custom and group elements (raw BMP format)     */
+/* ------------------------------------------------------------------------- */
+
+void CreateCustomElementImages()
+{
+#if defined(TARGET_SDL)
+  char *filename = "graphics.classic/RocksCE.bmp";
+  Bitmap *bitmap;
+  Bitmap *src_bitmap;
+  int dummy_graphic = IMG_CUSTOM_99;
+  int yoffset_ce = 0;
+  int yoffset_ge = (TILEY * NUM_CUSTOM_ELEMENTS / 16);
+  int src_x, src_y;
+  int i;
+
+  bitmap = CreateBitmap(TILEX * 16 * 2,
+                       TILEY * (NUM_CUSTOM_ELEMENTS + NUM_GROUP_ELEMENTS) / 16,
+                       DEFAULT_DEPTH);
+
+  getGraphicSource(dummy_graphic, 0, &src_bitmap, &src_x, &src_y);
+
+  for (i = 0; i < NUM_CUSTOM_ELEMENTS; i++)
+  {
+    int x = i % 16;
+    int y = i / 16;
+    int ii = i + 1;
+    int j;
+
+    BlitBitmap(src_bitmap, bitmap, 0, 0, TILEX, TILEY,
+              TILEX * x, TILEY * y + yoffset_ce);
+
+    BlitBitmap(src_bitmap, bitmap, 0, TILEY, TILEX, TILEY,
+              TILEX * x + TILEX * 16, TILEY * y + yoffset_ce);
+
+    for (j = 2; j >= 0; j--)
+    {
+      int c = ii % 10;
+
+      BlitBitmap(src_bitmap, bitmap, TILEX + c * 7, 0, 6, 10,
+                TILEX * x + 6 + j * 7,
+                TILEY * y + 11 + yoffset_ce);
+
+      BlitBitmap(src_bitmap, bitmap, TILEX + c * 8, TILEY, 6, 10,
+                TILEX * 16 + TILEX * x + 6 + j * 8,
+                TILEY * y + 10 + yoffset_ce);
+
+      ii /= 10;
+    }
+  }
+
+  for (i = 0; i < NUM_GROUP_ELEMENTS; i++)
+  {
+    int x = i % 16;
+    int y = i / 16;
+    int ii = i + 1;
+    int j;
+
+    BlitBitmap(src_bitmap, bitmap, 0, 0, TILEX, TILEY,
+              TILEX * x, TILEY * y + yoffset_ge);
+
+    BlitBitmap(src_bitmap, bitmap, 0, TILEY, TILEX, TILEY,
+              TILEX * x + TILEX * 16, TILEY * y + yoffset_ge);
+
+    for (j = 1; j >= 0; j--)
+    {
+      int c = ii % 10;
+
+      BlitBitmap(src_bitmap, bitmap, TILEX + c * 10, 11, 10, 10,
+                TILEX * x + 6 + j * 10,
+                TILEY * y + 11 + yoffset_ge);
+
+      BlitBitmap(src_bitmap, bitmap, TILEX + c * 8, TILEY + 12, 6, 10,
+                TILEX * 16 + TILEX * x + 10 + j * 8,
+                TILEY * y + 10 + yoffset_ge);
+
+      ii /= 10;
+    }
+  }
+
+  if (SDL_SaveBMP(bitmap->surface, filename) != 0)
+    Error(ERR_EXIT, "cannot save CE graphics file '%s'", filename);
+
+  FreeBitmap(bitmap);
+
+  CloseAllAndExit(0);
+#endif
+}
+
+#if 0
+void CreateLevelSketchImages_TEST()
+{
+  void CreateCustomElementImages()
+}
+#endif